Question

我正在使用带有optaplanner的drools，但是当我启动项目时，它有时会返回此异常，有时并没有使用相同的代码返回任何异常。

规则：

rule "groupedSteps"
when
            $Act : Action(this !=null,Step != null,$step : getStepType().getId(),isCanItBeGrouped(),period !=null)
              accumulate(
                  Action(this != null,Step != null,period != null,isCanItBeGrouped(),getStepType().getId() == $step,$startTime : getStartTime(),getStartTime() >= 0);
                  $firstStart : min(checkStartTimeIsBigOrEqualToZero($startTime))
                  )

    Action($firstStart == getStartTime(),$step == getStepType().getId(),isCanItBeGrouped() == true,$xMachine : Machine, $employee : Employee,period != null)
    Action(this != null,isCanItBeGrouped() == true,getStepType().getId() == $step,$xStartTime : getStartTime(),$xMach : Machine,$xEmployee : Employee,period != null,Employee !=null)
    eval($xStartTime < (int)$firstStart || $xEmployee != $employee || $xMachine != $xMach)
then
scoreHolder.addHardConstraintMatch(kcontext, -5);
end

checkStartTimeIsBigOrEqualToZero方法：

function int checkStartTimeIsBigOrEqualToZero(int startTime)
{
   try{
       if (startTime >= 0)
           return startTime;
       else
           return 99999;
       }
       catch (Exception ex)
       {
           return 99999;
       }
}

完全错误：

线程中的异常＆＃34; AWT-EventQueue-0＆＃34;执行后果异常 for rule＆＃34; groupedSteps＆＃34;在org.optaplanner.examples.opnext.solver中： java.lang.UnsupportedOperationException：累积函数（min）在规则中使用[groupedSteps]没有reverseSupport org.drools.core.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException（DefaultConsequenceExceptionHandler.java:39）在 org.drools.core.common.DefaultAgenda.handleException（DefaultAgenda.java:1247）在 org.drools.core.phreak.RuleExecutor.innerFireActivation（RuleExecutor.java:438）在 org.drools.core.phreak.RuleExecutor.fireActivation（RuleExecutor.java:379）在org.drools.core.phreak.RuleExecutor.fire（RuleExecutor.java:135）在 org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire（RuleExecutor.java:88）在 org.drools.core.concurrent.AbstractRuleEvaluator.internalEvaluateAndFire（AbstractRuleEvaluator.java:34）在 org.drools.core.concurrent.SequentialRuleEvaluator.evaluateAndFire（SequentialRuleEvaluator.java:43）在 org.drools.core.common.DefaultAgenda.fireLoop（DefaultAgenda.java:1067）在 org.drools.core.common.DefaultAgenda.internalFireAllRules（DefaultAgenda.java:1014）在 org.drools.core.common.DefaultAgenda.fireAllRules（DefaultAgenda.java:1006）在 org.drools.core.impl.StatefulKnowledgeSessionImpl.internalFireAllRules（StatefulKnowledgeSessionImpl.java:1318）在 org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules（StatefulKnowledgeSessionImpl.java:1309）在 org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules（StatefulKnowledgeSessionImpl.java:1293）在 org.optaplanner.core.impl.score.director.drools.DroolsScoreDirector.calculateScore（DroolsScoreDirector.java:117）在 org.optaplanner.examples.common.business.SolutionBusiness.getScore（SolutionBusiness.java:218）在 org.optaplanner.examples.opnext.business.CalculatorClass.bestSolutionChanged（CalculatorClass.java:149）在 org.optaplanner.examples.common.business.SolutionBusiness.lambda为$ null $ 0（SolutionBusiness.java:247）在 java.awt.event.InvocationEvent.dispatch $$$捕获（InvocationEvent.java:311）在java.awt.event.InvocationEvent.dispatch（InvocationEvent.java）at java.awt.EventQueue.dispatchEventImpl（EventQueue.java:756）at at java.awt.EventQueue.access $ 500（EventQueue.java:97）at java.awt.EventQueue $ 3.run（EventQueue.java:709）at java.awt.EventQueue $ 3.run（EventQueue.java:703）at java.security.AccessController.doPrivileged（Native Method）at java.security.ProtectionDomain $ JavaSecurityAccessImpl.doIntersectionPrivilege（ProtectionDomain.java:80）在java.awt.EventQueue.dispatchEvent（EventQueue.java:726）at java.awt.EventDispatchThread.pumpOneEventForFilters（EventDispatchThread.java:201）在 java.awt.EventDispatchThread.pumpEventsForFilter（EventDispatchThread.java:116）在 java.awt.EventDispatchThread.pumpEventsForHierarchy（EventDispatchThread.java:105）在 java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:101）在 java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:93） at java.awt.EventDispatchThread.run（EventDispatchThread.java:82）引起：java.lang.UnsupportedOperationException：累积规则[groupsSteps]中使用的函数（min）没有 reverseSupport at org.drools.core.reteoo.FromNodeLeftTuple.getAccumulatedObjects（FromNodeLeftTuple.java:105）在 org.drools.core.common.AgendaItem.getObjectsDeep（AgendaItem.java:79）在 org.drools.core.reteoo.RuleTerminalNodeLeftTuple.getObjectsDeep（RuleTerminalNodeLeftTuple.java:359）在 org.optaplanner.core.api.score.holder.AbstractScoreHolder.extractJustificationList（AbstractScoreHolder.java:118）在 org.optaplanner.core.api.score.holder.AbstractScoreHolder.registerConstraintMatch（AbstractScoreHolder.java:88）在 org.optaplanner.core.api.score.buildin.hardmediumsoft.HardMediumSoftScoreHolder.addHardConstraintMatch（HardMediumSoftScoreHolder.java:58）在 org.optaplanner.examples.opnext.solver.Rule_groupedSteps547703499.defaultConsequence（Rule_groupedSteps547703499.java:21）在 org.optaplanner.examples.opnext.solver.Rule_groupedSteps547703499DefaultConsequenceInvokerGenerated.evaluate（未知来源）at org.optaplanner.examples.opnext.solver.Rule_groupedSteps547703499DefaultConsequenceInvoker.evaluate（未知来源）at org.drools.core.phreak.RuleExecutor.innerFireActivation（RuleExecutor.java:431） ......还有30多个

UnsupportedOperationException：累积函数（min）没有reverseSupport

0 个答案: